DOC: Fix spelling errors (allows <verb>ing)

...cations/AppHyperspectral/app/otbHyperspectralUnmixing.cxx

Modules/Applications/AppMathParserX/app/otbBandMathX.cxx

...plications/AppSegmentation/app/otbLargeScaleMeanShift.cxx

Modules/Applications/AppStereo/app/otbBlockMatching.cxx

.../Visualization/MonteverdiGui/include/mvdImageViewWidget.h

...ualization/MonteverdiGui/include/mvdProjectionBarWidget.h

...pplicationEngine/include/otbWrapperCompositeApplication.h

...pers/ApplicationEngine/include/otbWrapperProxyParameter.h

Packaging/CMakeLists.txt

Packaging/makeself/README.md